From: Dave Love <d.love@dl.ac.uk>
Cc: bug-gnu-emacs@gnu.org
Subject: Re: correcting Emacs CHAR_COMPONENTS_VALID_P
Date: 16 Apr 2002 00:18:34 +0100 [thread overview]
Message-ID: <rzqwuv8v9dh.fsf@djlvig.dl.ac.uk> (raw)
In-Reply-To: 200204130410.NAA29660@etlken.m17n.org
You wrote:
> Dave Love <d.love@dl.ac.uk> writes:
>
> > I accidentally made a bogus character from a 94x94 charset like
> > (make-char 'japanese-jisx0208 32 32)
>
> > and was confused by the result of inserting it.
>
> > Is it worth fixing, or is it intentional for efficiency or something?
> > It isn't trivial to fix because several functions and macros are
> > affected.
>
> The current behaviour is intentional. Efficiency is one
> reason. Another reason is historical one. There exists
> many files that contains invalid byte sequences such as 0xA0
> 0xA0 (especially EUC-GB). Before we introduce
> eight-bit-control and eight-bit-graphic, we couldn't decode
> them properly if we treat them as invalid byte sequence.
> Thus I made the rule loosen. Now, as we have
> eight-bit-graphic, we can make the rule firm, but I think
> it's not worth spending time on it.
I think that deserves commentary in the sources to avoid anyone else
wasting time looking at it.
next parent reply other threads:[~2002-04-15 23:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200204130410.NAA29660@etlken.m17n.org>
2002-04-15 23:18 ` Dave Love [this message]
2002-04-18 2:25 correcting Emacs CHAR_COMPONENTS_VALID_P Kenichi Handa
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